Method and apparatus for electrically isolating a

专利名称：Method and apparatus for electrically

isolating a rail in a precast concrete gradecrossing

发明人：Benjamin Wabnitz申请号：US08/179144申请日：19940107公开号：US0152A公开日：19951107

摘要：A precast concrete grade crossing includes a plurality of base members, each ofwhich has a central recess formed in the upper surface thereof. A pair of rails are eachencased by a rubber boot which extends through the crossing in a single continuouspiece. The boot-encased members are received in the recess which includes a shoulderalong the outer side of each rail. The shoulder bears against a lip of the boot whichextends upwardly to along outer side of the head of the rail to prevent moisture fromentering the space between the boot and the rail below the shoulder.

申请人：PACIFIC INTERNATIONAL PIPE ENTERPRISES, INC.

代理机构：Marger, Johnson, McCollom & Stolowitz

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